""ET TROJAN Sage Ransomware Checkin Primer""

SID: 2023766

Revision: 3

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_01_25, deployment Perimeter, malware_family Ransomware, malware_family Sage, performance_impact Moderate, signature_severity Major, tag Ransomware, updated_at 2024_04_08, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact

Reference:

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "POST"

  • Value: "POST / HTTP/1.1|0d 0a|Host|3a|"

  • Value: !"User-Agent|3a|"

  • Value: !"Accept"

  • Value: !"Referer|3a|"

  • Value: !"Cookie|3a|"

  • Value: !"Content-Type|3a|"

Within:

PCRE: "/^.{0,15}[\x00-\x09\x80-\xff]/Ps"

Special Options:

  • http_method

  • fast_pattern

  • http_header

  • http_header

  • http_header

  • http_header

  • http_header

source